Insights into volcanic processes from the Calbuco 2015 eruption
  • Upper Lecture Theatre, Sherwell Centre

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The School of Geography, Earth and Environmental Sciences organises a regular series of research seminars throughout the academic year to which everyone is welcome to attend. Speakers - both external and internal to the University - will talk on topics related to all aspects of Earth Sciences.

Today's speaker is Professor Mike Burton from the University of Manchester.

Breakthroughs in understanding volcanic processes and developing new observational techniques can be driven by detailed studies of volcanic eruptions. In this talk we will examine research arising from the Manchester volcanology group’s work on the Calbuco eruption, Chile, 2015, which erupted with only a few hours of precursory seismic activity. This eruption gave us the opportunity to study the detailed gas emission rate and plume height time series using satellite data, achieving an unprecedented 20 minute resolution. These results allowed us to elucidate the changing role of excess sulphur degassing in different phases of the eruption. We also examined the detailed trace and major element geochemistry of the eruption products, providing new insights into the poorly understood triggering mechanisms which can produce Plinian-type eruptions with very little precursory activity. 

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